This was a deliberate change for R 2.4.0 with SVN log:
r38145 | rgentlem | 2006-05-20 23:58:14 +0100 (Sat, 20 May 2006) | 2 lines
fixing gregexpr infelicity
So it seems the author of gregexpr believed that the bug was in 2.3.1, not
2.5.1.
On Wed, 10 Oct 2007, [EMAIL PROTECTED] wrote:
> Full_Name: Peter Dolan
> Version: 2.5.1
> OS: Windows
> Submission from: (NULL) (128.193.227.43)
>
>
> gregexpr does not find all matching substrings if the substrings overlap:
>
>> gregexpr("abab","ababab")
> [[1]]
> [1] 1
> attr(,"match.length")
> [1] 4
>
> It does work correctly in Version 2.3.1 under linux.
'correctly' is a matter of definition, I believe: this could be considered
to be vaguely worded in the help.
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>
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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